Main structural parameters

Engine model:139QMB
Engine type:single-cylinder,4-stroke,air-cooled
Bore(mm):39mm
Stroke(mm):41.5mm
Displacement:49.5ml
Compression ratio:10.5:1
Ignition:CDI
Intake:0HC cam chain drive
Engine rotation direction:Right
Lubrication method:pressure,splash type
Starting mode:electric starter/kick starter
Valve clearance:(Hot state)0.06mm-0.08mm

Main Performance Parameters

Max power (kW/rpm):2.1kw(7500r/min)
Rated power and speed:1.8kW(7000r/min)
Max torque(N.m/(r/min)):3.1N.m(6500r/min)
Min fuel-consume ratio:450 g/kW.h
Min idling speed:1600r/min
Limits for the emission of pollutants from:According to the provisions of GB14621

Transmission Parameters

Clutch:Dry automatic centrifugal
Power take-off mode:Belt drive
Transmission:CVT
Transmission Ratio: Continuously variable transmission ratio range: 2.64-0.86
Reducer speed ratio:
Level 1:3.250
Level 2:3.400

Accessories

Carburetor Type:Vacuum flat suction
Carburetor Model:PD18J
Magneto type:Outer rotor type magneto
Magneto model:CFW-50
Ignition coil type:Capacitive discharge type
Ignition coil model:GCFW50
Spark plug type:Resistance type
Spark plug model:A7RTC
Spark plug electrode gap:0.6mm-0.7mm
Air Filter Type:Flexible polyurethane foam and paper filter element
Exhaust muffler type:GY50
Lubricating oil pump type:internal and external rotor oil pump CF50
A.4.13 Starter motor type:permanent magnet DC
A.4.14 Starting motor model:QDY-114

Outer dimension and net weight

Outer size:length X width X height (l X b X h):580mm X 340mm X 330mm.
Net weight:22kg

Product Features

• Engine Type: GY6 50cc Single Cylinder 4-Stroke,Cooling: Air Cooled
• This Complete Engine Includes Carburetor, CDI, Starter Solenoid, Coil
• For 10-inch wheel scooter/50cc engine size scooters and vehicles
• High quality aluminum cylinder head and aluminum cylinder body
• Max power (kW/rpm)??2.1kw(7500r/min)
  ,Rated power and speed: 1.8kW(7000r/min)